On speed of sound...

"Em. I was reading about the president yesterday. You know the president was a pilot right? He told this story of when he was riding on a plane and it was going the speed of sound. And a little boy got out of his seat and came down the row running. So the boy was going faster than the speed of sound. And the president said that he saw a flash of flame circle his head when this happened and he heard a boom. Weird huh?"